Antar trataka — internalised after-image
Close your eyes after gazing and hold the mental image of the flame at the brow centre.
Why it works
The retinal after-image is a real neurological imprint that briefly substitutes an external object for an internal one. Sustaining attention on this fading image trains the mind to hold a mental object steady — the core skill needed for concentration (samatha) meditation more broadly. It bridges outer-object and purely inner-object practice.
How to do it
- After a round of external gazing, gently close the eyes.
- Locate the complementary-colour after-image — usually orange-blue — and hold attention there.
- When the image fades, resist opening the eyes immediately; try to reconstruct it mentally.
- Note when the mind wanders and bring attention back to the imagined flame without self-criticism.
Evidence
Retinal after-images are well-characterised physiologically. Using them as a meditation object mirrors the "mental image" instruction in samatha traditions, which has modest empirical support for improving sustained attention. A longitudinal study of intensive concentration training found measurable gains in perceptual discrimination and sustained attention, grounding the sustained-attention claim in controlled data. (mechanistic)
No trials test antar trataka specifically; evidence borrows from the broader concentration-meditation literature.
Sources
Common mistake
Immediately opening the eyes when the image fades, losing the transition from outer to inner attention that is the point of the practice.
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More practices for Trataka: The Yoga Practice of Fixed-Gaze Meditation
- Bahir trataka — external candle gaze
Sit one metre from a candle and hold an unblinking gaze on the flame tip until tears form.
- Bindu trataka — gazing at a dot
Use a black dot on a white card instead of a candle for a portable, daylight-safe practice.
- Jyoti dharana — holding the inner light
Visualise a steady inner flame at the space between the eyebrows and rest attention there.
- Progressive duration building
Start at sixty seconds of unbroken gaze and add thirty seconds each week until you reach ten minutes.
- Pre-sleep trataka for insomnia and mind-calming
A ten-minute trataka session in low light before bed draws scattered thoughts into a single point.
- Using trataka to break a distraction spiral
When you notice you've been hopping between tabs for ten minutes, anchor back with two minutes of trataka.
Related concepts
- Kasina Meditation: Concentration Through a Physical Object
Classical Theravada concentration practice — the object, the nimitta, and the path to absorption
- Vipassana Meditation, Made Practical
Insight, equanimity, and the body-scan approach to liberation from reactivity
- Mindfulness-Based Stress Reduction (MBSR)
The core MBSR practices, the mechanisms, and where the evidence is genuinely strong